August 15, 2005—YORK International Corporation has expanded the range of its YORK Latitude air-cooled chiller line from 260 tons to 515 tons with the introduction of new three- and four-compressor units, the company says. These larger-capacity chillers provide the highest tonnage in a single-piece unit, according to YORK.
The Latitude chiller incorporates advanced variable-speed drive (VSD) technology with screw compressors—an industry first, according to York—to improve energy and sound-level performance, while retaining the traditional cost advantages of air-cooled chillers: first cost, ease of installation, and ease of maintenance.
During acoustically critical morning and evening hours, Latitude chillers achieve up to 10 dBAs noise decrease, which equates to a 50 percent perceived noise reduction. Latitude chillers also take advantage of YORKs new SilentNight control. This control system employs a proprietary load-limit control function to ensure quiet operation. In addition, Latitude chillers come standard with built-in acoustic features that often eliminate the need for additional sound attenuation and sound-barrier walls.
The new, higher capacity Latitude chillers employ multiple industrial-grade screw compressors, optimized for HFC-134a refrigerant. Independent refrigeration circuits for each compressor provide maximum redundancy. These compressors use 50 percent fewer moving parts than competitive screw compressors to deliver low-maintenance operation.
The Latitude control center keeps track of compressor runtime and startups, and automatically switches the lead and lag compressors to balance operating hours. Maintenance data is available from the LCD display panel, a remote BAS system or downloadable logs.
For more information, visit the YORK Web site.
